1<html xmlns="http://www.w3.org/1999/xhtml" xmlns:m="http://www.w3.org/1998/Math/MathML">
2<head>
3<style type="text/css">
4
5[class="wide"] { width: 100000000px }
6
7</style>
8<script type="text/javascript">
9
10function boom()
11{
12  document.getElementById("targ").appendChild(document.getElementById("cm").cloneNode(true));
13}
14
15</script>
16</head>
17
18<body onload="boom();">
19<table>
20  <tbody>
21    <td><m:mrow class="wide" id="cm"></m:mrow></td>
22    <tr><m:mrow id="targ"></m:mrow></tr>
23  </tbody>
24</table>
25</body>
26
27</html>
28